Colostrum contains over 90 immune factors, including the naturally-occurring Immunoglobulins IgG, and IgA. Supplementation with Freeze Dried Bovine Colostrum may be beneficial for dogs with food or seasonal allergies, as it contains an ingredient called proline-rich polypeptide (PRP). Research studies on Bovine Colostrum report that PRP may stimulate an under-active immune system into dealing with disease. Most importantly it can suppress an over active system that results from autoimmune disorders and allergic reactions.
Thrive Bovine Colostrum is sourced from USDA Grade A dairy cows raised in the United States. It is laboratory tested to ensure it is antibiotic and rBST-free.
https://pubmed.ncbi.nlm.nih.gov/23773360/